package com.abl.javabasis;

public class _23_传参 {
    public static void main(String[] args) {

    }

    public static void main2(A a, B b) {
        a.a = 20;
        b.a = 30;
    }


}

class A {
    public int a = 10;
}

class B {
    public int a = 10;
}
